Riddle: The Dinner Party

You and your wife organize a dinner party. You invite four other husband-wife couples. You and your wife don't
necessarily know everyone you invited. Once everyone is at the party, the people who don't know each other yet
shake hands with each other. You can assume that everyone knows their own wife/husband, and that noone shakes
their own hand.

After this happens, you ask each person, except for yourself, how many people they shook hands
with. Everybody tells you a different number.

Yes, this riddle is possible. If everbody shook hands with a different number of people, then the most any person shook hands
with was 8 people, and in fact, a single person must have shaken hands with exactly 8 people. Figure out exactly who this person
did - and didn't - shake hands with. Then go from there.